12 
NEUROPTEROUS INSECTS. 
black, white at base ; abdomen elongated, fuscous, 
with somewhat glaucous interrupted bands and 
spots ; two basal segments thick, the second with a 
narrow interrupted band; third remarkably con- 
tracted in the middle, with two small transverse 
spots, and on the posterior margin an interrupted 
band ; remaining segments having the same mark- 
ings as the third, together with a large double late- 
ral longitudinal spot, excepting the ultimate and 
the caudal segments, which have only the posterior 
interrupted band ; caudal segment two-thirds the 
length of the preceding one ; anal processes as long 
as the two preceding segments, undulated, folia- 
ceous, with a longitudinal line in the middle, dilated 
on the inner edge beyond the middle, near the inner 
tip, hairy, and with a tooth, and rounded promi- 
nence ; at tip rounded, with a prominent cylindric 
spine ; inferior process half the length of the supe- 
rior ones ; feet piceous, or blackish ; anterior thighs 
with a glaucous line behind. 
Length less than three inches. 
The third abdominal segment is remarkably con- 
tracted. The posterior interrupted bands might be 
called rounded or quadrate spots, and are largest 
and more glaucous on the posterior segments. It 
resembles Libellula tenebrosa. ? 
4. JE. clepsydra. Abdomen contracted near the 
base, with interrupted bands ; anal processes folia- 
ceous. 
Inhabits Massachusetts. 
This is so much like constricta, S., that it may 
possibly prove to be a variety. N evertheless, the anal 
